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Phytoformations Of Silver And Gold Nanoparticles, Brooke A. Fridley Dec 2006

Phytoformations Of Silver And Gold Nanoparticles, Brooke A. Fridley

Graduate Theses, Dissertations, and Problem Reports

Stevia and red beet suspension cultures were examined for uptake of silver from AgNO3 solution. Alfalfa and mung bean sprouts were also studied for silver accumulation when grown in AgNO3 solution. AA analysis confirmed the presence of silver in both sprouts and suspension cultures after exposure to AgNO3 solution, despite the toxic effects of silver on the living matter.;Extract from Pelargonium graveolens underwent reaction with both AgNO3 and KAuCl4 to form silver or gold nanoparticles. For the reaction with AgNO3, light was required to initiate the reaction. In contrast, reactions producing gold nanoparticles did not require light to react ...


Dynamic Model Of Circulating Fluidized Bed, Yue Huang Dec 2006

Dynamic Model Of Circulating Fluidized Bed, Yue Huang

Graduate Theses, Dissertations, and Problem Reports

Circulating fluidized beds (CFBs) are used in many processes in the chemical industry to reduce pollution and increase efficiency. Optimization and control of CFBs are very important and require an accurate, real time, dynamic model to describe and quantify the process.;The present work focuses on modeling the transient behavior of large CFB units, whose flow characteristics were shown to yield C-shaped voidage profiles using cork as the fluidized material and air at ambient conditions.;The riser is modeled in two ways: (1) as a set of well-mixed tanks connected in series; (2) as a 1-D axisymetric cluster flow. The ...


Intense Training In Sport: Monitoring The Effects On Immune Function And Mood State, Michelle Bartlett Dec 2006

Intense Training In Sport: Monitoring The Effects On Immune Function And Mood State, Michelle Bartlett

Graduate Theses, Dissertations, and Problem Reports

To enhance and optimize sport performance, athletes are training at increasingly higher levels of intensity, volume and frequency. When increases in any of these areas of training are not accompanied by adequate recovery, over time, decrements in performance and physical/psychological maladies can result. Consequently, the purpose of this study was to monitor five competitive swimmers during a swimming season in two of the potential areas in which an adverse response to training may appear: the immunological parameter of mucosal immune function and the psychological parameter of mood state. Each parameter was assessed once per week over the seven weeks ...


Determining Low Permeability Formation Properties From Absolute Open Flow Potential, Fatemeh Belyadi Dec 2006

Determining Low Permeability Formation Properties From Absolute Open Flow Potential, Fatemeh Belyadi

Graduate Theses, Dissertations, and Problem Reports

Absolute Open Flow Potential (AOFP) is often the only productivity information available from low permeability gas formations particularly in the Appalachian Basin. Absolute Open Flow Potential (AOFP) is commonly evaluated through a single point test due to its cost effectiveness. In low permeability reservoirs, the time required for obtaining stabilized flow rate is often very long. Therefore, stabilized AOFP may not be achieved in short tests. Furthermore, most low permeability gas wells are hydraulically fractured to improve their productivity. Therefore, the post-fracture measured AOFP could be significantly influenced by fracture properties.;The objective of this was to develop a methodology ...


Application Of A Statistical Zonation Technique To Granny Creek Field In West Virginia, Venkata Kristamsetty Dec 2006

Application Of A Statistical Zonation Technique To Granny Creek Field In West Virginia, Venkata Kristamsetty

Graduate Theses, Dissertations, and Problem Reports

The significance of dividing the sedimentary intervals into flow units reflects groups of rocks that has similar geologic, physical properties and depositional environment that affect fluid flow. Variations in rock properties result from depositional, diagenetic and post-depositional changes. A flow unit is a volume of a reservoir rock that is continuous laterally and vertically and has similar averages of those rock properties that affect fluid flow.;In this study, a statistical zonation technique developed by Testerman to identify and describe naturally occurring zones in a reservoir is applied to Granny Creek field in West Virginia. This technique is particularly useful ...


Design, Development And Qualification Of Compact Mobile Emissions Measurement System (Cmems) For Real-Time On-Board Emissions Measurement, Aseem Tiwari Dec 2006

Design, Development And Qualification Of Compact Mobile Emissions Measurement System (Cmems) For Real-Time On-Board Emissions Measurement, Aseem Tiwari

Graduate Theses, Dissertations, and Problem Reports

The objective of this study was to design, develop and qualify the Compact Mobile Emissions Measurement System (CMEMS) for real-time on-board measurement of exhaust emissions from heavy-duty diesel vehicles. This study was aimed at developing a system more compact and lighter with respect to the existing Mobile Emissions Measurement System (MEMS), so that the entire system could be mounted on the tail pipe of the test vehicle in order to reduce installation time, power requirements and manpower requirements. This was achieved by judicious selection of commercially available compact solid-state gas analyzers, and development of a sampling system which was significantly ...


Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong Dec 2006

Edge Curling Effect On Interface Delamination Of Concrete Overlays For Bridge Decks, Tao Hong

Graduate Theses, Dissertations, and Problem Reports

Deterioration of reinforced concrete bridge decks caused by various environmental conditions and traffic loads is a problem of significant concern. A protective thin overlay of about 2-inches is typically placed over newly constructed concrete bridge decks. Concrete overlay mixtures offer high resistance to traffic loads and environmental attacks, and often serve as leveling finished surfaces. A critical problem however has been the debonding and delamination propagation of the interface between overlay and substrate concrete, as observed in several bridges in West Virginia. Several studies indicated that during early-age of overlay curing, the debonding usually starts at corners or edges of ...


Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula Dec 2006

Software Application For Emergency Responders, Safer 2.0, Saritha Reddy Potula

Graduate Theses, Dissertations, and Problem Reports

The SAFER 2.0 was developed as a web based information system for the First Responders involved in dealing with the hazardous materials incidents. The software tool enables First Responders to view and identify the substances involved in a hazard via a secure Internet connection. The tool also aids in identifying the unknown substances based on the physical description (color, odor, texture, gas/liquid, etc.), symptoms and other information available at the site of the incident. The system is based on the 2004 North American Emergency Response Guidebook (ERG2004) and NIOSH Pocket Guide (NPG). ERG2004 was developed for use by ...


Cooperative Diversity Using Mimo Systems, Ramachandran Rajagopalan Dec 2006

Cooperative Diversity Using Mimo Systems, Ramachandran Rajagopalan

Graduate Theses, Dissertations, and Problem Reports

Multipath fading is one of the primary factors for degrading the performance in a wireless network. Information theoretic and past research suggest the use various diversity techniques to combat fading in wireless networks. Antenna diversity, a form of diversity technique, when incorporated in a wireless transceiver increases the system capacity and is one of the effective methods to combat fading in wireless systems. Also, recent research by Laneman et.al., Sendonaris et.al. suggests that cooperation among users in a wireless networks is an effective approach for a better signal reception in multipath fading environments. The diversity gains obtained by ...


The Study Of Down-Hole Hydro-Cyclone Efficiency In Oil Wells Using Computational Fluid Dynamics, Ahmed A. Yusuf Dec 2006

The Study Of Down-Hole Hydro-Cyclone Efficiency In Oil Wells Using Computational Fluid Dynamics, Ahmed A. Yusuf

Graduate Theses, Dissertations, and Problem Reports

Water is by far the largest waste stream associated with oil and gas production and it is unimaginable to find an oil reservoir absolutely free from connate water. Water management has become an important issue of hydrocarbon production, since the produced water increases as the field grows older and the cost of water handling, such as separation, treatment and repair is dramatically increasing. Down-Hole Separation (DOWS) and re-injection results in the production of oil to the surface, while portions of water are injected to the underground formation without ever being lifted to the surface.;DOWS depends on geological characteristics of ...


An Intelligent Portfolio Management Approach To Gas Storage Field Deliverability Maintenance And Enhancement, Kazim A. Malik Dec 2006

An Intelligent Portfolio Management Approach To Gas Storage Field Deliverability Maintenance And Enhancement, Kazim A. Malik

Graduate Theses, Dissertations, and Problem Reports

The main goal of this thesis is to modify and apply the state-of-the-art intelligent, optimum portfolio management to the gas storage field in order to optimize the return on investment associated with well remedial operations. It continues the development of a methodology for candidate selection and stimulation design and optimization using Artificial Intelligence techniques. The project used the data of an actual gas storage field to test the results.;The project data include Well-bore, Completion, Perforation, Stimulation, Well-test and Reservoir Data. The software developed in parallel with this selection methodology includes an easy to use interface that allows the user ...


An Evaluation Of The Bailey Method To Predict Voids In The Mineral Aggregate, Craig Mason Dec 2006

An Evaluation Of The Bailey Method To Predict Voids In The Mineral Aggregate, Craig Mason

Graduate Theses, Dissertations, and Problem Reports

The Bailey Method was developed by Robert Bailey of the Illinois State DOT. It was intended to be a tool to predict changes in voids in the mineral aggregate (VMA) resulting from gradation alterations in compacted asphalt concrete samples. This research evaluates the changes in VMA due to gradation alterations of four contractors' mix designs. By providing a tool to predict VMA, a desired gradation for asphalt mixtures can be developed to create a strong aggregate skeleton for rut resistance, durability, and adequate VMA.;The objective of this research was to evaluate the Bailey Method to predict voids in the ...


Identifying *Assessment Practices In Undergraduate Accounting Programs, Anna L. Lusher Dec 2006

Identifying *Assessment Practices In Undergraduate Accounting Programs, Anna L. Lusher

Graduate Theses, Dissertations, and Problem Reports

The researcher conducted a survey of 786 baccalaureate accounting programs in the United States to determine the content and structure of their assessment plans. The study focused on five essential workplace skills: critical thinking, information literacy, oral communication, problem solving, and written communication. It examined the accounting programs and related assessment plans to determine whether the identified skills were integrated into the curriculum and were identified as learning outcomes in the assessment process. The study evaluated how faculty assess students' skills and how assessment results are used to make changes in programs and to improve student learning. The research also ...


Perspectives Of 12th Grade Students, Their Families, And School Officials Related To Affordability And Accessibility Of The West Virginia Promise Scholarship Program At Logan High School, Craig S. Mcclellan Dec 2006

Perspectives Of 12th Grade Students, Their Families, And School Officials Related To Affordability And Accessibility Of The West Virginia Promise Scholarship Program At Logan High School, Craig S. Mcclellan

Graduate Theses, Dissertations, and Problem Reports

With only 14% of West Virginia's population over 25 years old possessing a bachelor's degree, the lack of a skilled workforce often thwarted state legislators' attempts to attract new industry to the state's struggling economy. To address workforce qualification concerns, state educational stakeholders implemented a merit-based scholarship program with average requirements in 2002. The West Virginia PROMISE (Providing Real Opportunities for Maximizing In-state Student Excellence) Scholarship Program goals include encouraging high school students to work harder, and to entice more graduates to attempt post-secondary work at in-state institutions.;This qualitative study was designed to discover the perceptions ...


Exploring High-Quality Student Affairs Learning Outcomes Assessment Practices At Three American Research Universities, Adam S. Green Dec 2006

Exploring High-Quality Student Affairs Learning Outcomes Assessment Practices At Three American Research Universities, Adam S. Green

Graduate Theses, Dissertations, and Problem Reports

This study was conducted because limited research has occurred in the area of co-curricular student learning outcomes assessment, which has resulted in confusion within the student affairs profession on how to develop and implement assessment plans. The purpose of this study was to examine high quality assessment practices of student affairs divisions at three different research institutions in order to advance the value, usefulness, and understanding of learning outcomes assessment within the student affairs profession, so more student affairs divisions may begin assessing the co-curricular. Those student affairs divisions selected for this study represented assessment models with significant experience in ...


An Evaluation Of Current West Virginia Specifications And Construction Methods Regarding The Density Of Hot Mix Asphalt, Andrew Rudolph Dec 2006

An Evaluation Of Current West Virginia Specifications And Construction Methods Regarding The Density Of Hot Mix Asphalt, Andrew Rudolph

Graduate Theses, Dissertations, and Problem Reports

Pavement performance depends on the quality of the material, the mix design, and construction. The objectives of pavement construction are to place the material with a smooth surface, and compacted to the target density. Inadequate density permits water to enter the pavement leading to premature distress. It also can contribute to rutting as the pavement densify. A surface that is too dense is also prone to rutting.;This research evaluated methods for: measuring density, quality control, and longitudinal joint construction. Density specifications for West Virginia and surrounding states were reviewed to assess the compaction requirements for hot mix asphalt (HMA ...


Forecasting Truck Traffic Growth At West Virginia Non-Interstate Highways, Sundeep Gopisetty Dec 2006

Forecasting Truck Traffic Growth At West Virginia Non-Interstate Highways, Sundeep Gopisetty

Graduate Theses, Dissertations, and Problem Reports

Reliable estimates of truck volumes are important in transportation planning and design applications, such as pavement design and management. This study evaluates different statistical methods based on their accuracy and data requirements, to calculate the truck growth rates by developing statistical models. Nine years of data from 1995 to 2003 was used to develop these models for calculating the truck growth rates at non-interstate highways of West Virginia. The literature review and the current practices for the state DOT was conducted to better understand and select the different forecasting methods that could be applicable to the given data. As a ...


Selection Of Pilot Buses For Var Support And Voltage Stability Risk Analysis, Talpasai Lakkaraju Dec 2006

Selection Of Pilot Buses For Var Support And Voltage Stability Risk Analysis, Talpasai Lakkaraju

Graduate Theses, Dissertations, and Problem Reports

The primary objective of this thesis is to develop an index for the placement of reactive power support devices to ensure reliable operation of power systems. It is especially aimed at improving the load voltage profile and system security when loading is increased. Maintaining a good system voltage profile and security is an important aspect in voltage stability studies, especially with the ever increasing power consumption and system disturbances or contingencies. A new VAR support placement algorithm is developed using a standard continuation power flow and N-1 contingency criterion to pinpoint the best locations for the placement of VAR devices ...


Hygrothermal Effects On Free Vibration Characteristics Of Rotating Composite Beams, Sandeep Vennam Dec 2006

Hygrothermal Effects On Free Vibration Characteristics Of Rotating Composite Beams, Sandeep Vennam

Graduate Theses, Dissertations, and Problem Reports

Free vibration characteristics of a rotating composite cantilever beams subjected to a hygrothermal environment is studied using the finite element analysis. The problem is formulated using a First Order Shear Deformation theory (FSDT) for composite materials. The finite element formulation is based on variational principles and the equations are solved by a code generated using MATLAB. Hygrothermal effects are incorporated using empirical relations degrading the material stiffness property of the matrix depending on the temperature and moisture concentration. The dynamic analysis of a rotating composite beam are validated by comparing with that available in literature and the hygrothermal incorporation is ...


An Analysis Of The Relationship Between Faculty Perception Of Administrative Support And The Faculty Perceived Levels Of Implementation Of Good Teaching Practice In Distance Education, Carol L. Fugitt Dec 2006

An Analysis Of The Relationship Between Faculty Perception Of Administrative Support And The Faculty Perceived Levels Of Implementation Of Good Teaching Practice In Distance Education, Carol L. Fugitt

Graduate Theses, Dissertations, and Problem Reports

The faculty perceptions of administrative support for distance education and best distance education teaching practice were investigated. Participants were selected from the 2004-2005 full-time distance education faculty at Kentucky Community and Technical College, n = 432. The researcher developed a self-report survey, the Good Practices Survey, as a means to collect data for the research. Research questions investigating the relationship between four independent variables and perception of good distance education teaching practices were significant indicating that faculty perceive administrative support when implementing good distance education teaching practice. Research questions investigating the relationship between faculty support, student support, and support for assessment ...


The Relationship Between Technical Support And Pedagogical Guidance Provided To Faculty And Student Satisfaction In Online Courses, Philip R. Ice Dec 2006

The Relationship Between Technical Support And Pedagogical Guidance Provided To Faculty And Student Satisfaction In Online Courses, Philip R. Ice

Graduate Theses, Dissertations, and Problem Reports

This study examined the relationship between levels of technical support and pedagogical guidance provided to faculty and student satisfaction in online courses. Online learning is a rapidly evolving area of education, yet compared to traditional face-to-face learning very little is known about pedagogical techniques and best practices. This study explores the relationships between two factors that have been demonstrated to influence faculty satisfaction, technical support and pedagogical guidance (the predictor variables), and student satisfaction (the criterion variable) in online courses. The study uses quantitative methods to determine if varying levels of predictor variable input are related to changes in the ...


Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi Dec 2006

Analysis Of Single-Point Test To Determine Skin Factor, Abbas Belyadi

Graduate Theses, Dissertations, and Problem Reports

Single-point test results can be used to obtain information regarding the degree of damage in gas wells in the gas storage reservoirs. Single-point test is neither time-consuming nor costly to determine the productivity of a well. Furthermore, flow stabilization times would be short in high permeability gas storage reservoirs. Generally, a four-point test is conducted first to establish the deliverability relation. After some period of time, namely one year, a single-point test could be conducted. The results of the single-point and four-point tests can then be compared in order to identify any alteration in well performance.;The objective of this ...


Enhanced Iris Recognition: Algorithms For Segmentation, Matching And Synthesis, Samir Shah Dec 2006

Enhanced Iris Recognition: Algorithms For Segmentation, Matching And Synthesis, Samir Shah

Graduate Theses, Dissertations, and Problem Reports

This thesis addresses the issues of segmentation, matching, fusion and synthesis in the context of irises and makes a four-fold contribution. The first contribution of this thesis is a post matching algorithm that observes the structure of the differences in feature templates to enhance recognition accuracy. The significance of the scheme is its robustness to inaccuracies in the iris segmentation process. Experimental results on the CASIA database indicate the efficacy of the proposed technique. The second contribution of this thesis is a novel iris segmentation scheme that employs Geodesic Active Contours to extract the iris from the surrounding structures. The ...


An Interpolation Method For Stream Habitat Assessments With Reference To The Crystal Darter, Kenneth Richard Sheehan Dec 2006

An Interpolation Method For Stream Habitat Assessments With Reference To The Crystal Darter, Kenneth Richard Sheehan

Graduate Theses, Dissertations, and Problem Reports

Crystallaria asprella spp. (Elk River crystal darter) is documented only in Elk River, West Virginia. Little life history detail is known about this lotic, benthic-dependent species. Previous studies have led to a very basic understanding of the use of depth, flow and substrate of the crystal darter (Crystallaria asprella), and less is known about the Elk River crystal darter. Due to substrate-specificity in crystal darters (which reportedly bury in sand), a study concerning benthic stream habitat modeling was undertaken. Substrate and depth modeling using >5% of an area sampled at a resolution of 0.093 m2 square spatial data in ...


The Association Between Aggressive Behaviors And Academic Self-Esteem Of Preschool Children, Chrische' Marie Walker Dec 2006

The Association Between Aggressive Behaviors And Academic Self-Esteem Of Preschool Children, Chrische' Marie Walker

Graduate Theses, Dissertations, and Problem Reports

The intent of this study was to investigate the association between preschooler's aggressiveness behavior and their academic self-esteem in the classrooms. The participants in this study consisted of 63 preschoolers who attended the West Virginia University Laboratory Nursery School or the Pierpont Christian Preschool during the school year of 2005-2006. The preschoolers were rated by their teachers at each school on their student initiative, social attraction, success/failure, social attraction, self-confidence on the Behavioral Academic Self-Esteem Scale (BASE) and their aggressiveness with peers on the Child Behavior Scale (CBS).;Results of the study indicated that the preschooler's academic ...


Applying Stages Of Change Theory To An Acute Pain Situation: Development Of The Childbirth Stages Of Change Questionnaire (Csocq), Rebecca K. Widoe Dec 2006

Applying Stages Of Change Theory To An Acute Pain Situation: Development Of The Childbirth Stages Of Change Questionnaire (Csocq), Rebecca K. Widoe

Graduate Theses, Dissertations, and Problem Reports

Various self-management methods and pharmacological agents are available to relieve childbirth pain. Decisions about pain management during labor have medical, psychological, and sociological ramifications, yet research investigating the selection of childbirth pain management strategies is scarce. The purpose of the current study was to develop a self-report instrument, the Childbirth Stages of Change Questionnaire (CSOCQ), to assess a pregnant woman's readiness to self-manage childbirth pain. Items representative of five levels of readiness were generated by experts. Next, 3 pregnant women evaluated items for content validity. A pilot CSOCQ was administered to 536 undergraduate women. Factor analysis and item-reliabilities were ...


A Socioeconomic And Spatial Analysis Of Obesity In West Virginia: Policy Implications, Anura Kumara Amarasinghe Dec 2006

A Socioeconomic And Spatial Analysis Of Obesity In West Virginia: Policy Implications, Anura Kumara Amarasinghe

Graduate Theses, Dissertations, and Problem Reports

This dissertation integrates both theoretical and empirical insights to facilitate understanding of the current obesity epidemic in WV given heterogeneity in socioeconomic, demographic and built environment characteristics of the state. In meeting this objective, county-level and individual-level health demand analyses using secondary data sources were conducted. County-level obesity differences were studied using spatial and non-spatial random and fixed effects frameworks under a panel data structure. Individual health demand was investigated by recursive estimation of individual health responses to ordered self-assessed health (SAH) in terms of lifestyle choices, socioeconomic, demographic and built environment characteristics using Behavioral Risk Factor Surveillance System (BRFSS ...


Faith, Power, And Conflict: Miner Preachers And The United Mine Workers Of America In The Harlan County Mine Wars, 1931--1939, Carletta A. Bush Dec 2006

Faith, Power, And Conflict: Miner Preachers And The United Mine Workers Of America In The Harlan County Mine Wars, 1931--1939, Carletta A. Bush

Graduate Theses, Dissertations, and Problem Reports

Early accounts of the Harlan County mine wars place the inability of the United Mine Workers of America (UMWA) to establish a permanent foothold in the county, first at the feet of the Harlan County Coal Operators Association (HCCOA) and secondly at the worn work boots of miners who, when work was plentiful, saw little or no need for a union. The power of the HCCOA is not in question. Its members used their immense wealth and influence to build a million dollar war chest to fight the union and to maintain their iron-clad grip upon the county's political ...


Left Arm Of The Republic: The Department Of The Pacific During The Civil War, James Robbins Jewell Dec 2006

Left Arm Of The Republic: The Department Of The Pacific During The Civil War, James Robbins Jewell

Graduate Theses, Dissertations, and Problem Reports

Although the Civil War was fought largely in the East it was a transcontinental war. Securing the Far West for the Union played an important, though secondary role in the northern war effort. When most of the Regular Army units were called east, holding the region and confronting the multiple threats to its security fell to the western volunteers. Through their efforts, they maintained a general stability in a vast region where both potential and actualized threats could easily have hampered Union efforts in the main theatres of war. Therefore, by quelling secessionist schemes and activities and attempting to maintain ...


The Effects Of Age, Instructions, And Problem Content On Everyday Problem -Solving Outcome Using Two Scoring Procedures, Tara L. Neely Dec 2006

The Effects Of Age, Instructions, And Problem Content On Everyday Problem -Solving Outcome Using Two Scoring Procedures, Tara L. Neely

Graduate Theses, Dissertations, and Problem Reports

Prior literature has relied on varied methodology to infer conclusions about adult problem solvers; possibly leading to erroneous assumptions about everyday problem-solving performance in adulthood. The present study examined everyday problem-solving performance of 133 younger, middle-aged, and older adults. The goal of the study was to investigate whether different scoring procedures (number vs. strategy type) or participant instructions (self target vs. others target) affected how adults performed on two types of open-ended problem-solving vignettes (home vs. friend problem domains). Differential age patterns were found when comparing the number and types of strategies reported. When assessing total number of solutions generated ...